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I have a panasonic 65" LCD TV that has developed a yellow discoloration in the middle of the screen. Everything around the edges is the proper hue/tint, but everything toward the middle of the screen is dingy yellow. It does not appear to be anything on the outside of the screen itself. What could be causing this and how do i fix it?

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  • fiestatoad Aug 23, 2010

    I wouldn't know how the panel could have gotten damaged. It has not been moved since we brought it home. It sits in a recessed area of the wall. Does anyone else have any other ideas? substance on the lamp or the internal mirrors (if there are any mirrors in an lcd tv) perhaps?

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  • Master
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Hi


Thanks for using FixYa. From what you have described it seems that the inverter board is fine so it is either the T-con board in the unit has gone bad and/or it is not getting the required 12vdc from the power supply unit. If you have knowledge of internal circuitry of the unit then you can open the back of the unit and check the T-con board which is the last board before the LCD panel. Usually it is available with the LCD Panel. All this is only recommended if you have electrical expertise & know how to solder/re-solder components as these units contain high voltages even when in off position. Please do accept the solution if the issue is resolved or post a comment for further assistance.


Thanks
Rylee

Posted on Aug 23, 2010

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  • Master
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The LCD panel itself has been damaged- either the panel has been pressed upon or the mountings have deformed the case and it has deformed the panel.
The damage can't be fixed, it's permanent. Either use the tv as is or buy a new one.

Posted on Aug 23, 2010

  • Azrael SRL Aug 23, 2010

    The image has a yellow tint because the pixels in the center are no longer properly controlled. Because the damaged zone is irregular the damaged zone can't have an electrical/command cause. This only leaves physical damage or lighting error. For the cause to be in the lighting would mean that all the CCFL tubes have suffered the exact same very weird failure (a color shift in the emitted light) at the same time - it's practically impossible.



    That only leaves physical damage. How that happened i don't know, but it did. And it's unfixable.

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